
Its name gives it away. Rjukanfossen -- from the Norwegian verb meaning "to emit smoke" or "to emit vapor" -- was named for the clouds of mist that billowed from its cascade, a 104-meter torrent on the river Maana that looked, from a distance, like a hillside on fire. For centuries, travelers came to the Vestfjorddalen valley in Telemark specifically to see it. Then, in 1905, the waterfall was put to work, and the spectacle that had drawn tourists became the engine that built a town.
Before industrialization claimed it, Rjukan Falls was one of Norway's great natural attractions. An 1848 illustration captures the waterfall in its full, untamed state -- a white ribbon of water crashing down the mountainside into the valley below, five kilometers west of the town that would take its name. The falls held a particular distinction: they were among the first waterfalls in the world to be illuminated by electric floodlights, and the electricity came from the waterfall itself. Visitors could stand in the valley at night and watch the cascade glow against the dark mountain, powered by its own energy. It was a demonstration of the future, though no one yet understood what that future would cost the falls.
In 1905, the river Maana and its waterfall were captured by the Vemork hydroelectric power plant. The plant channeled the water's energy into electricity for Norsk Hydro's saltpetre factory nearby, producing calcium nitrate fertilizer through the Birkeland-Eyde process. The choice was pragmatic: Norway's remote valleys held enormous hydroelectric potential, and the demand for artificial fertilizer was growing across Europe. Rjukan Falls went from tourist attraction to industrial resource almost overnight. The water that had drawn painters and travelers now turned turbines. The town of Rjukan grew around the factory, its existence owed entirely to the energy locked in that falling water.
Today, the falls run at a fraction of their original volume. Most of the Maana's water is diverted through the power station's intake pipes before it reaches the cliff edge. During periods of heavy rain or snowmelt, the cascade revives somewhat, offering a glimpse of what nineteenth-century travelers saw. But even diminished, the site carries weight. The rock face bears the marks of centuries of erosion, and the valley below still channels wind and mist in patterns shaped by the geography the waterfall carved. The Norwegian name endures as a reminder of what once filled this valley: not silence, but smoke -- the roaring, vaporous spectacle of water falling 104 meters to stone.
Rjukan Falls sits at the intersection of beauty and utility, a place where Norway made a choice that defined its modern identity. The country's abundant waterfalls became the foundation of its industrial economy, powering everything from fertilizer plants to aluminum smelters. Rjukan was among the first and most dramatic examples of that transformation. The waterfall that gave the town its name became the town's reason for existing -- and, paradoxically, nearly ceased to exist in the process. It is a story repeated across Norway's valleys, but here, where the name itself means "the smoking one," the irony is sharpest. The smoke is gone. The power remains.
Located at 59.87N, 8.48E in the Vestfjorddalen valley, Telemark county, Norway. The waterfall is situated on the river Maana, about 5 km west of the town of Rjukan. The Vemork power station is visible nearby on the mountainside. Nearest airport is Notodden Airport (ENNO), approximately 40 km southeast. Oslo Gardermoen (ENGM) is about 180 km northeast. The narrow, deep valley is dramatic from the air at 3,000-5,000 feet AGL. The waterfall is best spotted by looking for the cliff face and pipeline infrastructure along the valley's western wall.